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1751 w Acer Lcd monitor no pic sound ok..

Replaced C20 and c21 on the inverter board '' TDK PK07V002400 '' still the same.

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  • Kpinto Feb 15, 2009

    Hi Cricket, Will try this when I get home....Really appreciate your assistance with this...What was the replacement cost of the Inverter boards?

  • Kpinto Feb 16, 2009

    Hi Cricket,

    Which plug on the Inverter board were you reffering to... CN3 and CN4 go to the LCD display.....CN1 goes to the motherboard.



    I have 12 volts on F1 and F2... nothing on the CN3 and CN4 Plugs....is this where the 12 to 24v be?

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  • Acer Master
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Since you know this much, I would like you to pull the plug from the inverter board, turn the set on and measure for either 12 or 24 volts DC on the plug (that depends on what lcd display was used) If you have the correct voltage and does not fall off then the inverter board is bad, I have tried to locate various IC's on these boards with no luck so had to replace the board.

Posted on Feb 14, 2009

  • Jim Krause Feb 17, 2009

    One set will go to the inverter bd, another set should go to the main board, the long fine lead connetor is your lvds data cable to the lcd itself. Most power supplies in lcd's will have red, black, sometimes blue or yellow for PO ( power on command ). The connector you need should be the only one going to the inverter board which should have the red wires which if you unpluged that you should have the 12 volts and no less. There should also be 5v with that plug also. What were the values of the caps you changed and were the vented?, if not, how did you know to change them?

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